A group of Japanese college students made a rare visit to Pyongyang in late August — just before North Korea conducted its fifth nuclear test on Sept. 9 — for talks on war and peace with local students.

But three days of social exchanges and intense discussions left the groups at odds on issues such as how best to achieve world peace and whether nuclear disarmament is feasible.

"Both of us hope for peace, but the prospects we see and the means by which we seek to achieve peace are completely different," said participant Mirei Jinguji, 23, a senior at the University of Tokyo.